How to get the serial Numbers issued for an STO

Hi,

I created my own STO and mapped a serialised material for the same using transaction. I increased the stock by issuing serial numbers. The /SYCLO/MM_DOPURCHASEORDER_GET BAPI returns the PO header, item and longtext details. I want the serial numbers which are issued to the STO and the list of serial numbers for which the receipts has been done.

I want to know how to get the serial numbers which are issued to the STO throught the standard function module. I want only the issued serial numbers not the one for which the receipts has been done.

I tried using the standard BAPI, "BAPI_PO_GETDETAIL1" to get the serial number collection. But the FM is not returning the issued serial number as well as the list of serial numbers for which the receipts has been done. It is returning only the PO history in which the list of document number are present.

Thanks in Advance,

Mohan.